qzc690384PyPI
Advisory published Updated
qzc690384 is a confirmed malicious PyPI package (MAL-2026-18752) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in qzc690384 (PyPI)
What this malware does
The adjudication model's output was cut off by the provider safety filter on every attempt, which happens when the reviewed code reads like operational malware. Scores come from the partial verdict when it carried them; confidence is capped so a person reviews this version before any block.
In this campaign, packages execute malicious code during installation. The exact behavior varies between versions: fingerprinting environment, exposing a backdoor server listening for remote commands, downloading remote commands from a hardcoded location. Next stages seem to be downloaded from localhost, what suggests the code may still be a preparation for the real attack.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-11-qzc
Reasons (based on the campaign):
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The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
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The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.
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backdoor
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The package overrides the install command in setup.py to execute malicious code during installation.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for qzc690384 (version 1.0.0).
If you installed it — respond
qzc690384 is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If qzc690384 was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks qzc690384-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.